how to delete duplicate records through ax 2012

To Delete duplicate records  from salesTable or any other table through ax 2012 by x++ code you can write code in Ax job.

 Set fieldSet = new set(Types::Integer);  
 DictIndex IndexName = new DictIndex( tablenum(SalesTable), indexnum(SalesTable,SalesIdx));  
  int i;  
  ;  
 if(IndexName.numberOfFields())  
  {  
  for(i=1;i<=IndexName.numberOfFields();i++)  
  {  
  fieldSet.add(IndexName.field(i));  
  }  
 ReleaseUpdateDB::indexAllowDup(IndexName);  
 ReleaseUpdateDB::deleteDuplicatesUsingIds(tablenum(SalesTable),0, fieldSet);  
 ReleaseUpdateDB::indexAllowNoDup(IndexName);  
  }  
 info("Duplicate records deleted successfully");